go-common/app/job/main/activity/dao/like/web_data.go

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2019-04-22 10:49:16 +00:00
package like
import (
"context"
"database/sql"
"go-common/app/job/main/activity/model/like"
"github.com/pkg/errors"
)
const (
_webDataCntSQL = "SELECT COUNT(1) AS cnt FROM act_web_data WHERE state = 1 AND vid = ?"
_webDataListSQL = "SELECT id,vid,data FROM act_web_data WHERE state= 1 AND vid = ? ORDER BY id LIMIT ?,?"
)
// WebDataCnt get web data count.
func (d *Dao) WebDataCnt(c context.Context, vid int64) (count int, err error) {
row := d.db.QueryRow(c, _webDataCntSQL, vid)
if err = row.Scan(&count); err != nil {
if err == sql.ErrNoRows {
err = nil
} else {
err = errors.Wrapf(err, "WebDataCnt:QueryRow(%d)", vid)
}
}
return
}
// WebDataList get web data list by vid.
func (d *Dao) WebDataList(c context.Context, vid int64, offset, limit int) (list []*like.WebData, err error) {
rows, err := d.db.Query(c, _webDataListSQL, vid, offset, limit)
if err != nil {
err = errors.Wrapf(err, "WebDataList:d.db.Query(%d,%d,%d)", vid, offset, limit)
return
}
defer rows.Close()
for rows.Next() {
n := new(like.WebData)
if err = rows.Scan(&n.ID, &n.Vid, &n.Data); err != nil {
err = errors.Wrapf(err, "WebDataList:row.Scan row (%d,%d,%d)", vid, offset, limit)
return
}
list = append(list, n)
}
if err = rows.Err(); err != nil {
err = errors.Wrapf(err, "LikeList:rowsErr(%d,%d,%d)", vid, offset, limit)
}
return
}